Suspension Equipment for Hoist Ropes

The standard supply of cappel is as shown below and within reason the eye dimensions can be modified to suit any particular requirement. The cappel limbs can be extended if required to house a hard rubber shock absorber as a means of reducing the effects of high-energy vibration which can cause fatigue failure in ropes.

Standard cappel sizes are for ropes from 16 mm (5/8”) to 64 mm (2 1/8”) but cappels for ropes of greater diameter can be supplied. Cappel wedges can also be supplied with grooves to take ropes of smaller diameter than those shown in the table below.

Cappel limbs and bands are made from 1.5% manganese steel to BS 2772, Part 2, 1989, in the hardened and tempered condition. Wedges and safety block are of mild steel to BS 4360: 1979 Grade 43A and in the normalised condition. All cappels are proof load tested to 2.5 times the safe working load and subjected to magnetic crack detection. Ultrasonic tests can also be carried out if required.

Where conditions warrant we can apply zinc as a protective coating.

General Data

Cappel for Rope Diameter of

Safe Working Load based on a factor of safety of 10:1

Approxiamate Weight when assembled

mm

in

kg

ton

kg

lb

16

5/8

4064

4

16

35

19

3/4

5588

5 1/2

20

44

22

7/8

6096

6

27

60

26

1

8128

8

38

85

29

1 1/8

10668

10 1/2

50

110

32

1 1/4

13208

13

68

150

35

1 3/8

15240

15

82

180

38

1 1/2

18796

18 1/2

110

240

41

1 5/8

21336

21

132

290

45

1 3/4

25400

25

164

360

48

1 7/8

30480

30

190

420

51

2

35560

35

209

460

54

2 1/8

41656

41

268

590

57

2 1/4

41656

41

295

650

60

2 3/8

43688

43

320

705

64

2 1/2

45720

45

360

795

To enable us to supply the correct cappel we need the following information: